It may be an old cliche but life changes with your first child. Before my oldest was born I could drown puppies(I didn't!!) and it wouldn't bother me, now I can't get through a full episode of Oprah without getting emotional(I'm 6'3",245lbs, not a pretty site).
As for the morning sickness, my wife missed that and passed it on to me. Every morning before I put my cover-alls on at work I had to go to the washroom and throw up